Paste cut-out



C. W. OMAN PASTE CUT-OUT Aug. 27, 1929.

Filed May 28, 1923 3 Sheets-Sheet l INVENTOR 'CFTRL N OMfi/V ATTORNEYS C. W. OMAN PASTE CUT-OUT Aug. 27, 1929.

Filed May 28, 1923 3 Sheets-Sheet 2 INVENTOR IN ll BY x ' ATTORNELS Aug. 27, 1929. c w, N 1,726,449

PASTE CUT-OUT Filed May 28, 1925 3 Sheets-Sheet 5 v INVENTOR CFm'L 0v. OMHN ATTORNEYS Patented Aug. 27, 1929.

UNITED STATES 1 ATENT oF I- .lC

CARL w. OMAN, or SOUTH wI n n CONNECTICUT, ASSIGNOR To HE SMITH & WINCHESTER MFG. co, or soU H'wmDnA coNNncTIcuT', A CORPORATION or CONNECTICUT.

Application fired May 28,

My invention relates to paste cut-outs, and particularly to means for preventing the fouling of the paster mechanism on interruption of the feed thereto. More specifically 5 the invention contemplates means for automatically shifting the pastor backing roller out of operative position on failure of the" blank feed, thus to prevent the fouling of the backing roller by the paster when no blank is in position to receive the paste.

The invention is illustrated applied. to a bag bottomer in in which Fig. 1' is a broken side elevationof porthe accompanying drawings,

tion of 'a bag bottomermechanism to which While I have shown the inventionapplied to a bag bottomer, it will of-course'be under-' stood that it maybe associated with any ap' propriate machine and is not limited to the particular type of machineindicated, the latter serving merely to illustrate a'single practical "application of "the invention. Furthermore, the details of. the construction will necessarily be varied for "different machines, and may be modified inform and construction, as will be obvious to. those skilled in the art, without departing from what I claim as my invention. 5?

Referring to the drawings, andparticularly to Fig. 8, in which theessen'tiel e18 ments of the cut-out device are"illustrated, I have there shown a paster segment 1510f usual type, with which cooperates the'back ing roll 16, between which and thesegment the blank passes on the path 17,"andto which spindle 27 From the hub of crank 26 extends the feeler arm 28, at one end of which is the feeler roller 29. Also keyed to the paste is applied by the segment 15; The.

PASTE cuT- ou 192s. SerialNo. 642,011.

shaft 27 isa cam arm having a roller travelmg the cam face of the driven cam 32.

Also fast on the shaft 27' is the spring arm- 33 engaged byone end oft-he spring 34, the g other'end ofwhichis" anchored to the frame at 35 (Fig.2). 5

of the standards is supported a paste pan40," r

in which rotates the gathering roll 41 and the feed roll 42, from whic h' the paster seg ment 15 takes its supply appllcation to the blank 43.

of adhesive Y for The standards 44 and 45 carryupper'and: 1

lower: pairs 1 of pulleys 46," 47, 48 and 49 i for the'conveyor belts 50 and 51, whichcarry off the pasted blank. In advance of' the pastor 15 are arranged upper and lower" pairs of" side gripping andffeedingrolls "52 I and 53, between which theside margins of the blank are engaged, and by whichmthe blank. is fedforward to the paster. The

feeler arm 28 is arranged to bear upon the blank inthe area-thereof between the lateral ing the feeler; a r y v .The drive is taken from thepulley shaft feed rollers just described, which aid inhold blank against the "pressure of the 54. Pinion 55 thereon'meshesw'ith gear .56

on the shaft of rear cylinder 38 and also with gear 57 on the shaft .ofbelt pulley 47, The latter gear meshes with gear 58 for pul ley 46, and the drive, of the paste feed roll 42 and gathering roll 41 is taken therefrom through'gears '59and 60. The blank'gripa ping rolls .52 and 53 are driven from gear 56 throughfthe idler pinion 61 and the meshingpinions*62+63. The cam 32 takes its drive from the pinion 64 on the'main, shaft 54 through gear 65 on the. cam shaft.

"The operation of the" device is as follows. .Assuming the blank 43 to have beenenga'ged by the s1de gripping and feeding rollers 52 and 53, and to' have been fed forward by the latter to the belts 50 and 51, the portion of the blank to which adhesive istobeapplied overlies the backing roller .16 and is sup ported upon the latter during the application of "adhesive to theblank by the segment 15. Roller 16is maintainedin position against the drag of the paster by the stop pin66, which is engaged by the nose 67 on the hub 68 of the spring arm 33.

Upon failure of the feed of the blank 43 during the continued operation of the, ma-

chine, the feeler 29 which is ordinarily engaged beneath the blank when the latter'is in position to receive paste, is unopposed by the blank and therefore is displaced upward .by the pull of the spring 34, The motion thus imparted to the spindle 27 is transmittedlby the crank 26 through the lever and link system 25,23, 22, 21-and 18 to the backing roller 16, which is thus swung out of its normalposition sufiiciently'to permit the pasting segment 15 to clear the latter.

- The backing roller 16 is thus kept out of con-y.

tact with the segment and is not fouled by the latter.

,Were the feeler 29 permitted to remain in its displaced position it would obstruct the I ensuing feed' of the succeeding blank to the paster- It'is returned to normal position by the cam 32,.the cam area of which is so located and therotation of the cam so'timed that the feeler 29 is maintained out of obstructing position during the feed of the blank to the side presser'rolls 52 and 53,.but is permitted to function a brief interval priorto the approach of the pasteri segment 15 towardthe backing roll. In other words,

, the cam 32, functions to release the feeler sufficiently in advance of the engagement of the segment 15 with the backing roller 16'to permit the feeler mechanism to shift the backingroll outofa position in case the blank feed hasbeen interrupted..-. When a blank is in position and is engaged bythe feeler, the latter is heldagainst displacement by the blank, and the cam roller. 31 leaves the bear-' ing surface of the cam as indicated in Fig. 1, but is again engaged by the latter and holds the feeler out ofobstructing-position whenv the succeeding blank is fed to the gripping rolls 52 and 53. l

Various modifications will readily occur to those dealing with the problem. For example, the lever 18 may shift to theright,

instead of to the left, out of registerwith the pasting segment, but I prefer to shift to the left since this arrangement permitsthe support of the backing rollerm(by the pin 66) against displacement-by the frictional drag of the paster segment 15 during the pasting operation. 7

I I claimoas my inventione v1. A paste "cut-out device comprising a rotary paster, a cooperatingshiftable backing roll, a blanlcengaging feeler, and means operatively. connected. with the latter for shifting the backingroll out of register with the paster, together with means for-maintaining the feeler out of engagement with the blank until the approach of the pastertoward the, backing roll.

2. A paste cut-out comprising a paster, a cooperating backer, a blank-engaging feeler, means associated with the feeler for preventing engagement between the paster and backer on blank failure, and means normally maintaining the feeler inoperative, but automatically releasing the same on the approach of the paster and backer.

3. A paste cut-out comprising a blank feed, a pivoted feeler, and cooperating cam means alternately holding said feeler out of obstructing position in readiness for blank feed, and releasing the feeler to permit it to function when the parts are in blank feed position 4. Apastecut-out comprising. a paster, a

cooperating backer, a movable'feeler, cam means alternately holding said feeler inoperative, and releasing the. feeler to permit it to function, together with an operative connection between the feeler and the hacker to shift the latter out of cooperating relation with'thepaster. I

5. Ina paste out out, a rotary paster, a co-j operating backer, means for movablysupporting the hacker to permit the latter to shift in a direction counter to the blank feed and out of cooperating relation withthe' paster on failure of blank feed, and stop means supporting the backer against displacement by the drag of paster when the backer is in operative position.

6. In a machine of the type described, rotary feeders adapted to grip a blank at its opposite-side margins, a feeler arranged'to engage the blank between said rotary feedtaining the backing roll in operating position during the operation of the paster, a spring tending constantly to shift the back ing rollout of cooperating relation with the paster, and a feeler maintaining the backing ,7 roll in operative position during blank feed,

but permitting the backing roller to move out of cooperative relation with the paster'under the action o f said spring on'blank failure.

.8. In a machine of the type described, a

rotary paster, a cooperating backing rollpiv;

otally mounted, a fixed stop for maintaining the backing .roll in operating position during the operation of the paster, a spring tending constantly to shift the backing: rollout of cooperating relation with the paster, and a feeler maintaining the backing roll in operative position during blank feed, but permitting the backing roller to move out of cooperative relation with the pastor under the action of said spring on blank failure, together With positively operated means for moving the feeler against the stress of said 5 spring and out of blank-obstructing position during portion of the travel of the rotary paster.

9. In a paste cut-out, a rotary paster, a backer, a pivoted arm supporting said backfeeder mechanically connected to said arm to move said backer out of cooperating relation with said paster upon blank failure. 15 In testimony whereof I have signed my name to this specification.

CARL W. OMAN. 

